CBD-828: fixes and confs for cluster run

Change-Id: Ice4c8975c011fdcf1dffb3d118de3f0da7306ffa
Reviewed-on: http://review.couchbase.org/25458
Reviewed-by: Ronnie Sun <ronnie@couchbase.com>
Tested-by: Ronnie Sun <ronnie@couchbase.com>